Macro and Elaboration-Time Libraries

Libraries that define macros or signature cannot be compiled to native code. These libraries can be ``compiled'' to byte code by listing them in a special info.ss field:

• 'compile-elaboration-zos -- a list of library filenames (without paths); the library files in this list are compiled with macros, signatures, and elaboration expressions both evaluated and preserved in the .zo file. (There is one exeception: expressions using #%begin-elaboration-time instead of begin-elaboration-time are not preserved.)

  The files in the list are compiled from left to right, all in the same namespace. If a file does not need to be compiled, it is nevertheless loaded before subsequent files in the list are compiled, so macros and signatures defined by the file are available for later files.

• 'compile-elaboration-zos-prefix -- an S-expression to use as an elaboration-time prefix expression for compiling the files returned for 'compile-elaboration-zos.